The complete introduction to Unity game development

gamedeveloper.com:

Stepping into the world of game development with Unity can feel like being handed the controls to a spaceship. The interface is full of buttons, sliders, and panels, each with its own specific purpose. It's easy to feel overwhelmed, especially if you're new to game development. However, once you learn the essentials, this interface will transform from a daunting science-fiction control panel to a powerful canvas for your creativity.

Unity can be installed directly, but it is more common for developers to manage installation of one or more versions via the Unity Hub—a program that can download and automatically update any number of simultaneous installation of Unity, and which manages user-level software licenses and preferences. Unity Hub can be downloaded from https://unity.com/download by selecting the appropriate download for your operating system (Windows, Mac, or Linux). Once Unity Hub is installed, a specific Unity Editor version can be installed via the Installs page by selecting "Install Editor." If you have no specific constraints about which version to install (for example, if you relied on a framework that only worked with a specific version), just pick the latest version with LTS (long-term support, which means Unity has committed to maintain this version for a long time).

Note that if you have never used Unity before it may require you to register a license by providing an email address and agreeing to Terms of Service. In doing this, you agree that by using the free version of Unity you are not using it for certain purposes—such as to earn over some specified amount of income each year, typically in the hundreds of thousands of dollars—and that if you are, you will instead convert to a paid subscription.

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